[TYPO3-mvc] MM relation table - additional data

[Franz Koch]

Hey Dennis,

...
> What i'd like to achieve is a property related to my
> DocumentTemplateElement, thats value is written into the related
> MM_table. This property should only be set if the
> DocumentTemplateElement is fetched as child of a DocumentTemplate.
>
> Has anybody experience with this request? Have seen that Franz has
> contributed a patch, that makes the MM_match_fields available when
> writing MM_tables. But the config seems to expect the value for the
> field directly written in TCA.
>
> 'MM_match_fields' => array('outlineNumber' => 'outlineNumberValue')

That's how Typo3 is expecting it.

> Any ideas how to configure the relation that the value is feteched out
> of the DocumentTemplateElement object on runtime?

AFAIK that's not possible by using MM_match_fields - and it shouldn't be 
done by that if you need logic in the relation.

If you need metaData/logic in your relations then it sounds like you 
need a intermediate object and not just a mm-table - so your mm-table 
becomes a object with 3 properties: documentTemplateElement, 
documentTemplate and outlineNumber. Can you give such a intermediate 
object holding the onlineNumber a name in your domain?

I recently had a case, where a company can be assigned to several 
groups. This was like in your case a simple mm relation. Some time later 
I had the requirement to be able to assign a department of the company 
to each group relation, that will be used to display contact 
informations on the website. So I had to find a way to do this in a nice 
and clean way that fits in my domain. In the end I came up with the 
solution, that this relation is actually like a "membership", so I 
created a intermediate object "membership" which can store all the 
necessary information and even more in future.

-- 
kind regards,
Franz Koch